Hydrocarbon motor



Sept. 11,11923.

J. G. VINCENT HYDROCARBON MOTOR Filed Jan. 11 1919 2 sheets-sheet 1Sept.. www.

J. G. VINCENT HYDROCARBON MOTOR 2 Sheets-Sheet 2 Filed Jan. ll, 1919Patented Sept. llll', TQZT.

UNTTE@ STATES MTM@ TATNT @FFHQEO JESSE G. VINCENT, OF DETROIT, MICHIGAN,ASSIGNR TO PACKARD MOTOR CAR COMPANY, 0F DETROIT, MICHIGAN, A.CORPORATION 0F MICHIGAN.

HYDROCARBON MOTOR.

Application led January 11, 1919. Serial No. 270,658.

To all whom t may concern.'

Be it known that I, JESSE Gr. VINCENT, a citizen of the United States,and resident of Detroit, Wayne County, State of Michigan, have inventedcertain new and useful mprovements in Hydrocarbon Motors, of which thefollowing is a specification.

This invention relates to hydrocarbon motors, and particularly to thevalve operating mechanism thereof.

One of the objects of the invention is to provide an oil tight cam shaftcasing having housings for valve operating rock shafts, which areidentical in construction, and the cover members of which may beinterchang. ably applied to the xed members of the housings, and whichfeature also facilitates the, manufacture of the casing body of whichsaid housings form a part.

Another object of the invention is to provide a construction in whichthe rock shaft in the same housings operate opposite intake and exhaustvalves of the same cylinder, whereby the valve operating mechanism foreach cylinder may be separately removed.

Another object of the invention is to provide a rock shaft which hasmeans for clos--` ing the ends of the openings in the easing, adapted toreceive the rock arms, against the escape of lubricant.

Another .object of the invention is to provide a construction in whichthe valve operating arms of the rock shaft for each cylinder aredirectly aligned transversely of the cam shaft.

With these objects and others in view, the

invention is embodied in preferable form in' the construction andarrangement hereinafter described and illustrated in the accompanyingdrawings, in which- Figure 1 is an end elevation, partly in section, cfahydrocarbon motor embodying the invention.

Figure 2 is a plan view ofthe valve operating mechanism, some of thehousing covers being removed in order to show the relation of the camshaft and rock shafts.

Figure 3 is a side view in elevation, partly in vertical section, ofsaid mechanism; and

Figure 4 is a detail bottom plan view of one of the members constitutingtheupper .bearing member of the housing as well as the cover forA theopening in the cam shaft casing in which part of the valve operatingmember works.

Referring to the drawings, the invention isshown as applied to ahydrocarbon motor of the V-type, only one of the cylinder sets, 10,being shown. The cylinders have water jackets, 1 1. The motor isprovided with overhead valves 12 having upwardly extending valve stems13 adapted to be operated by cams 14 mounted on a cam shaft 15 extendinglongitudinally of the line of the cylinders between the opposing intakeand exhaust valves of said cylinders and which cam shaft may be drivenfrom the crank shaft of the motor in any suitable manner.

A cam shaftv casing 16 is removably fixed on the cylinder jacketsbetween the valve stems. This cam shaft casing is provided on its uppersurface with a plurality of integral flattened extensions 17, each ofwhich forms the fixed base member of a rock'shaft housing and bearingmember. Each member 17 is provided in its upper surface withsemi-cylindrical sockets or cradles 18 in each of which is mounted arock shaft 19. These rock shafts are held in position in said cradles bymeans of housing covers Q() each having a semi-cylindrical Ygroove 21which fits over the rock shaft and co-operates with the cradle inproviding the complete bearings for the shafts. One rock shaft housingconsisting of a fixed base part and a removable cover bolted thereto isprovided for each cylinder and these housings are identica-l inconstruction, and all the covers thereof may be formed from a singlemold and also the cam shaft casing may be readily cast owing to theidentity of formation of the base members. n each complete housing aremounted two rock shafts` one corresponding to the intake valve and theyother to the exhaust valve of a common cylinder. An outwardly extendingarm Q2 is fixed on one end of each rock shaft beyond the edge of thecasing and ythese arms are adapted to extend over the valve stems toactuate the same. Intermediate the ends of the rock shaft, the latter isprovided with inwardly extending forked arm 23 carrying at its end aroller 24 against which is adapted to bear one of the cams 14 on the camshaft. These forked, cam actuated arms of the two Opposite rock shaftsextend inwardly past one another and are located within an openingv 25cut through the upper wall of the cam shaft casing so as to permit therollers to come in contact with the cams.

In order to permit this relative positioning of the two opposite camactuated arms the latter are spaced at respectively different,

points along their rock shafts. The upper housing members 21 for therock shafts constitute covers for these openings in the casing and henceit is rendered possible to provide a combined cam shaft and rock shaftenclosure which is oil tight. These housings constitute parts of the camshaft casing, and the base members 17 are structurally integraltherewith. The upper Wall of each of the covers of the rock shaftcasings is cored out to provide a recess 26 which substantially conformsto the outline of the forked arms 23 and thereby permits free movementof the rollers within the cover and at the same time serves to decreasethe weight of the latter.

Each rock shaft is provided at the end thereof opposite that end towhich the rock arm is iXcd with a flange 27 enlarged beyond the,circumberence of the rock shaft and lying outside of the casing andadapted to close the channel formed by the two half sockets of thehousing base and housing cover against the escape of lubricant from thehousing and cam shaft casing.

Arms 28, integral with the casing, are bolted to brackets -29 on thecylinders or Atheir jackets, to thereby support the casing body.

Although one specific embodiment of the invention has been described inthe above specification it should be understood that modifications andchanges may be made without departing from the spirit or scope of theinvention as expressed in the followin claims.

aving thus described my invention, what I claim and desire to secure byLetters Patent is 1. In a hydrocarbon motor, in combination with-a camshaft, a casing, a bearing in said casing, a cover for said bearing,rock shafts on opposite sides of the axis of the cam shaft, and a valveoperating rock arm on each rock shaft at the end thereof, there being apair of rock shafts for each cylinder, said arms of opposite shaftsbeing directly aligned transversely of the axis of the cam shaft.

2. In a hydrocarbon motor, in combination with a cam shaft, a cylinder,an intake valve and an exhaust valve for said cylinder, a casing for thecam shaft, a pair of rock shafts in the casing corresponding to saidrespective valves, each of said rock shafts having a valve actuatingarm' at one end thereof, said arms of' thev respective rock shafts beingaligned transversely of the axis of the cam shaft and each rock shafthaving a flange at the other end outside the casing.

3. In a hydrocarbon motor, in combination with a series of cylinders, acam shaft, a casing, bearings in said casing corresponding to eachcylinder, opposite rock shafts in A said bearings having valve.actuating arms for the valves of a common cylinder, said arms beinglocated beyond the bearings and directly opposite to one another.

In testimony whereof I aliixl my signature.

JESSE G. VINCENT.

